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Chemistry, 30.07.2019 03:00 kristieroth1

Which statement best summarize the relationship between the muscular system and the cardiovascular system? a. the heart is protected from injury by the breastbone. b. nutrients are carried to the heart through arteries and veins c. messages are carried by nerves between the brain and the heart. d. the heart contract and expands as it pumps blood through the body and how do i explain that i know the

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